Comparing control methods of water inrush disaster using mathematical programming: modelling, analysis and a case study

Qi, Yueming; Yeh, Tian Chyi Jim; Wu, Yangcan; Meng, Lingkui; Hao, Yonghong

doi:10.1080/19475705.2017.1391883

Cited by 3 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The water control measures used in mining a shallow coal seam may be inadequate for deep-water control. Moreover, the cost and difficulty of constructing such measures increase with depth, and the equilibrium between the groundwater and the eco-system is destroyed [26][27][28][29][30]. Therefore, further in-depth research into methods of preventing and controlling water inrush into mines is needed.…”

Section: Introductionmentioning

confidence: 99%

Application and Research of Gangue Partial-Filling Mining Method in Preventing Water Inrush from Floor

et al. 2022

View full text Add to dashboard Cite

Coal gangue produced during coal production not only poses a serious threat to the ground environment but also imposes serious economic burdens on the mine. The partial-filling mining (PFM) method proposed in this paper can make full use of coal gangue and is of great significance to the prevention and control of water disasters at the working face. The specific process used to implement this method is to first divide the working face into several narrow working faces and then fill the filling body into part of the goaf. The ability of PFM to restrain floor water inrush is analyzed by physical simulation, and the field application research is carried out at the No. 9211 mining face of Bucun Coal Mine in Shandong, China. The physical simulation results show that the failure depth of this layer is less than 5 m. The field measurements reveal that the maximum compression deformation of the filling body is 89.1 mm, and the maximum floor failure depth of the floor is only 8.6 m. Comparative analysis indicates that the floor failure depth of the No. 9211 working face with the local filling method is 4.6 m lower than that of the No. 9110 working face with the strip mining method. In addition, no water inrush accident occurs at the No. 9211 working face during mining. Therefore, PFM not only controls the floor damage depth effectively but also consumes coal gangue to protect the mine environment.

show abstract

Section: Introductionmentioning

confidence: 99%

Application and Research of Gangue Partial-Filling Mining Method in Preventing Water Inrush from Floor

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Further, Li et al (2011) performed a numerical investigation of groundwater outbursts near faults in underground coal mines, providing highly meaningful guides for investigating the mechanism and preventing groundwater outbursts induced by faults in practice. Many other methods to evaluate and predict mine water inrush have been developed (Wildemeersch et al 2010;Li CP et al 2013;Li T et al 2013;Shi et al 2014;Wu et al 2016;Bai et al 2016;Qi et al 2017). Most of the methods mentioned are multi-factor comprehensive evaluation methods.…”

Section: Introductionmentioning

confidence: 99%

P-H-q evaluation system for risk assessment of water inrush in underground mining in North China coal field, based on rock-breaking theory and water-pressure transmission theory

Qiao

2018

Geomatics, Natural Hazards and Risk

View full text Add to dashboard Cite

Risk assessment of water inrush from a coal seam floor is essential for safety in many coal mines. From the point of view of mechanics, such water inrush forms on the floor when the aquiclude breaks under the action of continuous water pressure within a certain period of time. Consequently, the water from the aquifer below the aquiclude gushes along the rupture surface into the goaf. In this study, to clarify the water inrush mechanism, a time-related function f(P, H, q) is developed (where P, H, and q are the aquifer water pressure, aquifuge thickness, and aquifer specific yield, respectively). Hence, the likelihood of water inrush can be determined. Data collected from 150 cases are used to determine the related parameter thresholds. The influence of P, H, and q on water inrush occurrence is analysed based on the time-related function. Finally, a P-H-q evaluation system is proposed and successfully applied. The P-H-q evaluation system not only facilitates realistic risk assessment for water inrush, but also elucidates the water inrush mechanism in underground mining. The results also provide a reference for evaluating the risk of water inrush in other coal fields.

show abstract

Radar imaging of fractures and voids behind the walls of an underground mine

et al. 2021

View full text Add to dashboard Cite

2-D and 3-D rock-penetrating radar data were acquired on the wall of a pillar in an underground limestone mine. The objective was to test the ability of radar to image fractures and karst voids and to characterize their geometry, aperture, and fluid content, with the goal of mitigating mining hazards. Strong radar reflections in the field data correlate with fractures and a cave exposed on the pillar walls. Large pillar wall topography was included in the steep-dip Kirchhoff migration algorithm because standard elevation corrections are inaccurate. The depth-migrated 250 MHz radar images illuminate fractures, karst voids, and the far wall of the pillar up to ~25 m depth into the rock, with a spatial resolution of lt;0.5 m. Higher-frequency radar improved image resolution and aided the interpretation, but at the cost of shallower depth of penetration and extra acquisition effort. Due to the strong contrast in physical properties between rock and fracture fluid, fractures with apertures as thin as a fiftieth of a radar wavelength were imaged. Water-filled fractures with mm-scale aperture and air-filled fractures with cm-scale aperture produce strong reflections at 250 MHz. Strong variation in reflection amplitude along each fracture is interpreted to represent both variable fracture aperture and non-planar fracture structure. Fracture apertures were quantitively measured, but distinguishing water- from air-filled the fractures was not possible due to the complex radar wavelet and fracture geometry. Two conjugate fracture sets were imaged. One of these fracture sets dominates rock mass stability and water inrush challenges throughout the mine. All of the detected voids and a large cave are at the intersection of two fractures, indicating preferential water flow and dissolution along conjugate fracture intersections. Detecting, locating, and characterizing fractures and voids prior to excavation can enable miners to mitigate potential collapse and flood hazards before they occur.

show abstract

Comparing control methods of water inrush disaster using mathematical programming: modelling, analysis and a case study

Cited by 3 publications

References 19 publications

Application and Research of Gangue Partial-Filling Mining Method in Preventing Water Inrush from Floor

Application and Research of Gangue Partial-Filling Mining Method in Preventing Water Inrush from Floor

P-H-q evaluation system for risk assessment of water inrush in underground mining in North China coal field, based on rock-breaking theory and water-pressure transmission theory

Radar imaging of fractures and voids behind the walls of an underground mine

Contact Info

Product

Resources

About